Lua APA (7ú heag.)

Arny, T. (2004). Explorations: Stars, galaxies, and planets (Updated ed.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Arny, Thomas. Explorations: Stars, Galaxies, and Planets. Updated ed. Boston: McGraw-Hill, 2004.

Lua MLA (8ú heag.)

Arny, Thomas. Explorations: Stars, Galaxies, and Planets. Updated ed. McGraw-Hill, 2004.

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